Electrolyte for double-layer capacitor and preparation method

A technology of double-layer capacitors and electrolytes, applied in the manufacture of hybrid/electric double-layer capacitors, hybrid capacitor electrolytes, etc., can solve the problem of large equivalent internal resistance, low affinity, and viscosity of morpholine-based ionic liquids in electric double-layer capacitors Advanced problems, to achieve the effect of easy operation, high surface tension and simple preparation method

Active Publication Date: 2013-12-04
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Morpholine ionic liquids are one of the newly developed ionic liquid electrolytes. However, morpholine ionic liquids have a particularly high viscosity and low affinity with commonly used separator materials such as PP and PE, making pure morpholine ionic liquids The equivalent internal resistance of the electric double layer capacitor with electrolyte is too large

Method used

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  • Electrolyte for double-layer capacitor and preparation method
  • Electrolyte for double-layer capacitor and preparation method
  • Electrolyte for double-layer capacitor and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In a glove box (that is, in the absence of oxygen and water and protected by an inert gas), the mass ratio of methyl ethyl morpholine tetrafluoroborate and polyoxyethylene butylanolamine with a mass ratio of 1:0.04 After mixing and stirring for 60 minutes, the polyoxyethylene butane acyl alcohol amine is uniformly dispersed in the methyl ethyl morpholine tetrafluoroborate to obtain an electrolyte solution for an electric double layer capacitor.

[0022] The parameters of Examples 2 to 20 are different from those of Example 1, but the preparation method steps and test conditions are the same as those of Example 1, see Table 1 below.

[0023] Table 1

[0024]

[0025]

[0026] Note: In this table, the reduction ratio of the equivalent internal resistance is the ratio of the equivalent internal resistance of the electric double-layer capacitor using the electrolyte of this embodiment measured under the same conditions in the corresponding embodiment without adding po...

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PUM

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Abstract

The invention discloses an electrolyte for a double-layer capacitor. The electrolyte for the double-layer capacitor contains morpholine ionic liquid and polyoxyethylenealkanolamide, wherein the mass ratio of the morpholine ionic liquid to the polyoxyethylenealkanolamide is 1:0.001 to 1:0.05. The invention further discloses a preparation method of the electrolyte for the double-layer capacitor. The equivalent internal resistance of the double-layer capacitor can be greatly reduced.

Description

technical field [0001] The invention relates to an electrolyte solution and a preparation method thereof, in particular to an electrolyte solution for double-layer capacitors and a preparation method thereof. Background technique [0002] Double layer capacitor is a new type of energy storage device, which has the advantages of high power density, high cycle life, and fast charge and discharge performance. It is widely used in military fields, mobile communication devices, computers, and hybrid power supplies for electric vehicles. As an important part of electric double layer capacitors, the electrolyte has a great influence on the storage performance of electric double layer capacitors, which determines the equivalent internal resistance, working voltage range, storage capacity, working temperature and working environment of the capacitor. [0003] Ionic liquids are organic liquid substances composed entirely of ions at or near room temperature. As a new type of electroly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/64H01G11/84
CPCY02E60/13
Inventor 周明杰邓惠仁王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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